SYNTHESIS OF γ-KETOPIMELIC ACID DERIVATIVES BY RHODIUM CARBONYL-CATALYZED HYDROCARBONYLATION OF ACRYLIC ACID DERIVATIVES
作者:Pangbu Hong、Takaya Mise、Hiroshi Yamazaki
DOI:10.1246/cl.1982.361
日期:1982.3.5
The rhodium carbonyl-catalyzed reactions of acrylicacidderivatives (1) with CO in iso-propanol gave selectively γ-ketopimelic acidderivatives (2) in good yields. In the reaction of ethyl acrylate (1b) in iso-propanol-d8, deuterium scrambling in the methylene groups of the product (2b) was observed.
[EN] PROCESSES FOR PRODUCING CARBOXYLIC ACIDS<br/>[FR] PROCÉDÉS DE PRODUCTION D'ACIDES CARBOXYLIQUES
申请人:EASTMAN CHEM CO
公开号:WO2020205348A1
公开(公告)日:2020-10-08
Processes are disclosed for preparing carboxylic acids from organic esters, the processes comprising contacting an ester with water in the presence of an acid catalyst and a homogenizing solvent at conditions effective to form a carboxylic acid. The homogenizing solvent is present in an amount sufficient to form a single-phase reaction mixture comprising the ester, water, and homogenizing solvent. The homogenizing solvent may be selected from acetonitrile, dimethyl sulfoxide, and 1,4-dioxane.
(BDP)CuH: A “Hot” Stryker's Reagent for Use in Achiral Conjugate Reductions
作者:Benjamin A. Baker、Žarko V. Bošković、Bruce H. Lipshutz
DOI:10.1021/ol702689v
日期:2008.1.1
A ligand-modified, economical version of Stryker's reagent (SR) has been developed based on a bidentate, achiral bis-phosphine. Generated in situ, "(BDP)CuH" smoothly effects conjugatereductions of a variety of unsaturated substrates, including those that are normally unreactive toward SR. Substrate-to-ligand ratios typically on the order of 1000-10000:1 can be used leading to products in high yields
Catalytic Dehydration Of Hydroxypropionic Acid And Its Derivatives
申请人:The Procter & Gamble Company
公开号:US20170057900A1
公开(公告)日:2017-03-02
Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
Lactic acid, lactic acid derivatives, or mixtures thereof are dehydrated using a catalyst and process to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the catalyst is also provided.